/*
 * Copyright 2009 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.leo.ibatis.demo.base;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

import org.springframework.util.StringUtils;

/**
 * UUID Filename generator.
 * 
 * @author Byeongkil Woo
 */
public class UUIDFilenameGenerator implements FilenameGenerator {
	
	public String generate(String originFilename) {
		return generate(originFilename, true);
	}
	
	public String generate(String originFilename, boolean appendExtension) {
		String filename = new SimpleDateFormat("yyyyMMddHHmm").format(new Date()) + "-" + UUID.randomUUID().toString();

		if (appendExtension) {
			String fileNameExtension = StringUtils.getFilenameExtension(originFilename);

			if (fileNameExtension != null) {
				filename += String.valueOf(EXTENSION_SEPARATOR) + fileNameExtension;
			}
		}

		return filename;
	}

}
